B District High-tech Industrial Park Chengdu, Sichuan
Sichuan HongYang HVAC Equipment Co., Ltd. (HY) is a modern large enterprise which integrate research and development, design, produce, sell, install maintain. The company covers an area of about 30,000 square meters, complete infrastructure, advanced ...
smart wireless air vent, air damper, fire/smoke damper, sound attenuator, axial flow fan